804489291 has 12 divisors (see below), whose sum is σ = 1163193720. Its totient is φ = 535793760.

The previous prime is 804489251. The next prime is 804489307. The reversal of 804489291 is 192984408.

804489291 is a `hidden beast` number, since 80 + 4 + 489 + 2 + 91 = 666.

It is not a de Polignac number, because 804489291 - 2⁷ = 804489163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (804489251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34690 + ... + 53031.

It is an arithmetic number, because the mean of its divisors is an integer number (96932810).

Almost surely, 2^804489291 is an apocalyptic number.

804489291 is a deficient number, since it is larger than the sum of its proper divisors (358704429).

804489291 is a wasteful number, since it uses less digits than its factorization.

804489291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88746 (or 88743 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 804489291 is about 28363.5204267735. The cubic root of 804489291 is about 930.0509822901.

The spelling of 804489291 in words is "eight hundred four million, four hundred eighty-nine thousand, two hundred ninety-one".